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Posted to issues@kudu.apache.org by "mintao (Jira)" <ji...@apache.org> on 2021/05/12 07:49:00 UTC

[jira] [Created] (KUDU-3284) Imporve logging of block tranaction in tserver's lock manager

mintao created KUDU-3284:
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             Summary: Imporve  logging of block tranaction in tserver's lock manager
                 Key: KUDU-3284
                 URL: https://issues.apache.org/jira/browse/KUDU-3284
             Project: Kudu
          Issue Type: Improvement
          Components: tablet
            Reporter: mintao


When multiple client updates same row simultaneously，there will incur a high contention and degrade perfermance of tserver.The current version provides less information and makes it hard to diagnose which tablet cause high contention.
{code:java}
W0511 02:05:10.302363 192070 lock_manager.cc:368] Waited 53 seconds to obtain row lock on key <redacted> cur holder: 0xfc7096c0
{code}
It would be nice if includes tabletID in the logging of blocking transaction and adds a metric about lock acquisition time about each tablet.



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